(CNN) - Nearly six in ten Americans think that Obama administration officials should hold diplomatic talks with Iran without that country first making significant changes in its policies. Four in ten say that the administration should not hold talks with Iran until significant changes are made. Only about one in five view Iran as an immediate threat to the United States, although an additional 60 percent say that Iran represents a long-term threat.

The CNN/Opinion Research Corporation Poll of 1,023 Americans was conducted by telephone April 3-5, before Wednesday's announcement that the United States would participate in talks with Iran, and has a margin of error of +/- 4.5 percentage points.

Results after the jump

QUESTION: Do you think Obama administration officials should hold diplomatic talks with the leaders of Iran in the next few weeks, or should they wait to hold diplomatic talks with Iran until that country makes significant changes in its policies towards other countries?

In next few weeks: 59 percent
Only after Iran makes significant changes: 40 percent

QUESTION: Which comes closer to your view - Iran poses an immediate threat to the United States; Iran poses a long-term threat to the U.S. but not an immediate threat; Iran does not pose a threat to the Unites States at all